The answer is the first one
Let
x-----------> cost of one hamburger
y-----------> cost of one <span>order of fries
we know that
4x+2y=9.74--------------> equation 1
12x+y=22.77-----------> y=22.77-12x-----------> equation 2
using a graph tool---------> calculate the equations system
see the attached figure
</span><span>
the solution is
x=1.79
y=1.29
the </span>cost of one hamburger is $1.79
the cost of one orders of fries is $1.29
<span>If Tashiana buys 3 hamburgers and one order of fries
3*1.79+1.29---------> $6.66
the answer is $6.66</span>
A constant function is a function whose output value f(x) is the same for every input value x, i.e. for all x, f(x)=c.
This means that
Answer: correct choice is A.
Answer: Make the ramp longer
making the ramp shorter and making the ramp steeper would be the same, and backing up wouldn't really help
Let's translate each sentence into "Math".
Pineapple = p
Orange = x
is means equal
Pineapple is 7 times as heavy as an orange: p = 7x
Pineapple weighs 870 grams more than orange. p = 870 + x
Substitute p = 7x into the second equation:
7x = 870 + x
Subtract x from both sides
6x = 870
divide by 6
x = 145
The orange weighs 145 grams.
The pineapple weights 7 times the orange = 7(145) = 1015 grams.